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Texas Instruments OPA140AIDBVT
- Part No.:
- OPA140AIDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA140AIDBVT.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,620
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Product details
Overview
OPA140AIDBVT from Texas Instruments is a single-channel, rail-to-rail output, JFET-input operational amplifier optimized for precision DC and low-frequency AC applications. It delivers 11-MHz unity-gain bandwidth, 20 V/μs slew rate, ±120 μV max input offset voltage, and 5.1 nV/√Hz input voltage noise density at 1 kHz - enabling high-fidelity signal conditioning in data acquisition and lab instrumentation.
For engineers reviewing the OPA140AIDBVT datasheet, OPA140AIDBVT pinout, OPA140AIDBVT application, or OPA140AIDBVT equivalent, this device supports single-supply operation from 4.5 V to 36 V (or dual ±2.25 V to ±18 V), features no phase reversal, includes V– in its input common-mode range, and is fully specified over –40°C to +125°C for industrial and test equipment deployment.
Technical Context
The OPA140AIDBVT employs a JFET input stage with ultra-low input bias current (≤10 pA) and integrated rail-to-rail output stage, enabling direct interfacing with precision ADCs/DACs operating on single supplies. Its 11-MHz gain-bandwidth product and 20-V/μs slew rate support fast settling (1.6 μs for 16-bit) without sacrificing DC accuracy.
Designed for stability with moderate capacitive loads, it requires external series resistance (e.g., 50 Ω) when driving >100 pF; thermal design leverages its 210°C/W junction-to-ambient resistance in the 5-pin SOT-23 package, with internal short-circuit protection limiting output current to +36 mA / –30 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-gain bandwidth | 11 MHz - enables stable closed-loop operation up to ~10 MHz at G = +1 with minimal phase margin degradation. |
| Slew rate | 20 V/μs - supports full-scale 10-V step response within 0.5 μs, critical for fast-settling DAQ front-ends. |
| Input offset voltage | ±120 μV max - ensures ≤0.002% gain error in 16-bit systems with 10-V full scale. |
| Offset drift | 1 μV/°C max - limits drift-induced error to <12 μV over 85°C industrial temperature range. |
| Input voltage noise | 250 nVPP (0.1–10 Hz) - preserves signal integrity in sub-Hz sensor interfaces like strain gauges and thermocouples. |
| Supply range | 4.5 V to 36 V single supply - eliminates need for split rails in portable or wide-input industrial power monitors. |
| Quiescent current | 2 mA max - allows battery-powered precision instruments to achieve >100-hour runtime with 200-mAh cells. |
Pinout & Package
OPA140AIDBVT is housed in a 5-pin SOT-23 package (DBV), with exposed pad not present. Thermal resistance is 210°C/W (junction-to-ambient), requiring minimal PCB copper for standard industrial ambient conditions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN (Pin 3) | Noninverting input | High-impedance JFET node; accepts signals down to V– rail, enabling true single-supply sensor biasing. |
| –IN (Pin 4) | Inverting input | Differential input node; used for feedback in inverting configurations or as summing junction. |
| OUT (Pin 1) | Output | Rail-to-rail CMOS output stage; drives 2-kΩ loads to within 350 mV of either rail at full load. |
| V+ (Pin 5) | Positive supply | Highest potential supply pin; must be ≥4.5 V above V– for valid operation. |
| V– (Pin 2) | Negative supply | Lowest potential supply pin; serves as reference for input common-mode range and output swing. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal | Guaranteed under all input overdrive conditions - prevents catastrophic latch-up in transducer interfaces with transient excursions beyond rails. |
| Input voltage range includes V– | Enables ground-referenced sensor outputs (e.g., bridge sensors) to connect directly without level-shifting circuitry. |
| Very-low 1/f noise | 250 nVPP (0.1–10 Hz) - minimizes drift and baseline wander in electrochemical and chromatography signal chains. |
| Low input bias current | ≤10 pA max - avoids significant voltage drop across high-impedance sources (>100 MΩ), preserving accuracy in pH and photodiode amps. |
| Rail-to-rail output | Swings to within 350 mV of V+ and V– at 2-kΩ load - maximizes dynamic range into ADCs with 0–VREF inputs. |
Applications
| Chemistry Analyzer Front-End | Data Acquisition Signal Conditioning |
|---|---|
Use Scenario: Amplifying low-level current from electrochemical sensors (e.g., amperometric gas detectors) with sub-picoamp bias requirements. IC Role / Device Role / Timing Role: Transimpedance amplifier with ultra-low input bias current and sub-μV offset to resolve nanoamp-level analyte currents. Use Value: 10 pA max input bias current prevents signal corruption; 250 nVPP 0.1–10 Hz noise ensures detection of slow-concentration changes. |
Use Scenario: Buffering and scaling analog sensor outputs (e.g., RTDs, strain gauges) before 16-bit SAR ADC sampling. IC Role / Device Role / Timing Role: Precision gain stage with rail-to-rail output and 1.6 μs 16-bit settling time for multiplexed channel throughput. Use Value: ±120 μV offset and 1 μV/°C drift maintain calibration stability across temperature; 11-MHz BW supports anti-alias filtering. |
| DC Power Supply Monitor | Lab Instrumentation Voltage Reference Buffer |
Use Scenario: Isolating and amplifying shunt voltage drops in programmable electronic loads and precision DC supplies. IC Role / Device Role / Timing Role: High-common-mode rejection current-sense amplifier with V–-referenced input for bidirectional sensing. Use Value: Input range including V– allows direct connection to low-side shunts; 140 dB CMRR rejects supply ripple at 100 kHz. |
Use Scenario: Buffering ultra-stable voltage references (e.g., LTZ1000, REF50xx) to drive ADC reference inputs and calibration DACs. IC Role / Device Role / Timing Role: Low-noise, zero-drift buffer with negligible loading effect on high-impedance reference nodes. Use Value: 5.1 nV/√Hz noise floor preserves reference SNR; 2 mA quiescent current avoids thermal drift in sealed instrument enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision JFET op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA141AIDBVT | Higher 18-MHz GBW, 27 V/μs slew rate, but 2× higher input voltage noise (7.5 nV/√Hz) and 200 pA IB max. | Better for wideband active filters; less suitable for sub-100-Hz sensor interfaces due to elevated noise. | Select OPA141AIDBVT only when bandwidth >12 MHz is required and noise budget permits. |
| ADA4625-1ARMZ | Lower 10.5 nV/√Hz noise at 1 kHz, 2.8 nA IB max, and integrated EMI filter; 8-MHz GBW and 24 V/μs slew rate. | Preferred in noisy industrial environments (e.g., motor drives); lower bandwidth limits high-speed DAQ use. | Choose ADA4625-1ARMZ where EMI immunity and mid-frequency noise dominate over DC precision. |
Compared with OPA140AIDBVT, OPA141AIDBVT trades ultra-low noise and bias for speed, while ADA4625-1ARMZ prioritizes EMI robustness and mid-band noise over sub-Hz precision - making OPA140AIDBVT optimal for DC-critical, low-source-impedance applications like reference buffering and analytical chemistry front-ends.
Availability
OPA140AIDBVT is available at Aetrix Electronics and suitable for data acquisition systems, lab instrumentation, and DC power supply monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA140AIDBVT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of heritage in precision op amp design and manufacturing.
The OPAx140 family was engineered specifically for high-accuracy, low-drift signal conditioning in demanding industrial, test, and measurement applications - emphasizing JFET input performance, rail-to-rail output, and robust operation across –40°C to +125°C.
FAQ
What is the maximum supply voltage for OPA140AIDBVT?
The absolute maximum supply voltage (V+ to V–) for OPA140AIDBVT is 40 V, but the recommended operating range is 4.5 V to 36 V for single supply or ±2.25 V to ±18 V for dual supply. Exceeding 36 V risks parametric shift; operation above 40 V causes permanent damage per TI's SBOS498F datasheet Section 6.1.
Does OPA140AIDBVT support rail-to-rail input?
OPA140AIDBVT does not support rail-to-rail input - its common-mode input range extends to V– but only to (V+) – 3.5 V. This V–-inclusive range enables ground-referenced sensing, but high-side signals require attenuation or level-shifting to avoid clipping, as confirmed in Electrical Characteristics Table 6.7.
What is the typical quiescent current of OPA140AIDBVT?
The typical quiescent current of OPA140AIDBVT is 1.8 mA at 25°C and nominal supply, with a maximum of 2.0 mA across the full operating temperature range (–40°C to +125°C), per Section 6.7 Electrical Characteristics in the SBOS498F datasheet.
Can OPA140AIDBVT drive capacitive loads directly?
OPA140AIDBVT is not optimized for direct capacitive load driving above ~100 pF. Figure 6-19 shows overshoot increases significantly beyond that point; TI recommends adding a 50-Ω series resistor (ROUT) between OUT and the load to isolate capacitance and preserve stability in applications like ADC input buffering.
Is OPA140AIDBVT suitable for precision thermocouple amplification?
Yes - OPA140AIDBVT is well-suited for thermocouple amplification due to its 250 nVPP 0.1–10 Hz noise, ±120 μV max offset, and 1 μV/°C max drift, which minimize cold-junction compensation errors and low-frequency drift. Its V–-inclusive input allows direct connection to grounded thermocouple junctions without level-shifting circuitry.
OPA140AIDBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- J-FET
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 20V/µs
- Gain Bandwidth Product:
- 11 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.5 pA
- Voltage - Input Offset:
- 30 µV
- Current - Supply:
- 1.8mA
- Current - Output / Channel:
- 36 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
OPA140AIDBVT FAQ
1.How can I place an order for OPA140AIDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA140AIDBVT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for OPA140AIDBVT reliable?
The price and inventory of OPA140AIDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA140AIDBVT is usually 5 days.
3.What payment methods are accepted for OPA140AIDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA140AIDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA140AIDBVT?
OPA140AIDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA140AIDBVT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for OPA140AIDBVT?
For technical support, including OPA140AIDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA140AIDBVT requirements.
6.How does Aetrix verify that OPA140AIDBVT is sourced from the original manufacturer or authorized distributors?
All OPA140AIDBVT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that OPA140AIDBVT meets industry standards.
7.What is the process for return or replacement of OPA140AIDBVT?
All OPA140AIDBVT units undergo pre-shipment inspection (PSI). If there is an issue with OPA140AIDBVT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The OPA140AIDBVT part is unused and in its original packaging.
Return procedure for OPA140AIDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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